Treating The Insoluble Substance Patents (Class 210/710)
  • Patent number: 10493383
    Abstract: One system embodiment includes: an inlet sensor that measures a fluid quality of an input fluid stream; an arrangement of separation units operating to extract contaminants from the fluid stream; and a user interface (UI). Each separation unit produces a respective output fluid stream, exhibiting a performance that is impacted by a respective operating parameter, and has an outlet sensor that measures an output fluid stream quality. The UI receives fluid quality measurements from the inlet and the outlet sensors, responsively derives a performance value for each separation unit and an overall performance value for the arrangement, and displays each of the performance values. The UI may further set the operating parameter values to automate and optimize the operation of the arrangement for different drilling conditions. The fluid quality measurements may indicate contaminant concentrations, and the performance values may account for separation efficiency, energy consumption, reliability, and next service date.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: December 3, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Sorin Gabriel Teodorescu
  • Patent number: 10351428
    Abstract: A method for removal and recovery of phosphorus includes a precipitation step for precipitating phosphorus from a liquid stream comprising at most 30 mg of phosphorus per liter and at most than 50 mg of suspended solids per liter, using a precipitation agent, to form a precipitate, to form a precipitate; a first separation step for separating the precipitate from the liquid stream; a dissolution step for dissolving the precipitate in phosphoric acid to obtain a first solution; and a second separation step for separating the phosphoric acid and the precipitation agent.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 16, 2019
    Assignee: HSY HELSINGIN SEUDUN YMPÄRISTÖPALVELUT-KUNTAYHTYMÄ
    Inventors: Tommi Fred, Mari Heinonen, Paula Lindell, Sini Reuna
  • Patent number: 10259721
    Abstract: Disclosed herein are methods of producing alumina trihydrate crystals from an alumina trihydrate recovery process stream wherein an aqueous emulsion comprising a crystal growth modifier, which is at least one of an acyclic anhydride or an alkyl or alkenyl succinic anhydride, is added to the alumina trihydrate recovery process stream, wherein the aqueous emulsion is substantially free of mineral oils. The method provides a decrease in percentage of alumina trihydrate crystals having a volume average diameter of less than about 45 micrometers compared to the percentage of alumina trihydrate crystals produced in the absence of the crystal growth modifier. The process does not require the addition of a defoamer/anti-foam agent in order to control foam generated in the process.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 16, 2019
    Assignee: Cytec Industries Inc.
    Inventors: Dannon Stigers, Marie E. Anderson
  • Patent number: 10196293
    Abstract: In accordance with one aspect of the invention a testing procedure, a processing procedure and a resulting product are provided whereby sewage sludge is primarily or firstly pre-hydrolyzed in whole or in part by means other than alkali. The alkali is then added to the pre-hydrolyzed product. The pre-hydrolyzed product from step one has a reduced potential for further hydrolysis and is more effectively stabilized in step 2 as a liquid biosolids-containing product or BSP. As a result, in accordance with the invention less of the alkali is used up in the step 2 further alkali-based hydrolysis of the pre-hydrolyzed product. The pH of the BSP product after the step 2 alkali treatment drops less over the period of storage and the BSP product will be better preserved against microbial regrowth.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 5, 2019
    Assignee: Lystek International, Inc.
    Inventor: Owen Patrick Ward
  • Patent number: 10167419
    Abstract: Beneficiating particulate additives by removing contaminants or minerals that impact the quality and specific gravity of the particulate additives may be achieved via dry solids separation technologies. For example, an air classifier, an electrostatic separator, and a combination thereof may be used to produce a beneficiated particulate additive comprising less than 40% of drill solids by weight of the beneficiated particulate additive.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: January 1, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Katerina V. Newman, Dale E. Jamison, Earl Joseph Chauvin, Yerzhan Ayapbergenov, Brice Aaron Jackson
  • Patent number: 10065878
    Abstract: A method for the forced dewatering, by pressing, of saline residues produced by drinking water production, or by the treatment of municipal or industrial wastewaters, in which method the saline residues are introduced into the cylinder (12a) of a piston press (12) comprising flexible drains (12e) formed by flexible sheaths from a material that is permeable to liquid but impermeable to solids, each drain (12e) comprising an inner passage that opens into an associated opening (12g), the press operating in batches, and characterized in that during pressing, the piston carries out reciprocal movements and applies alternating and variable pressures to the sludge, while the flexible drains are deformed, the liquid pressed out from the product passing through the wall of the drains and being discharged as a filtrate, while the dewatered sludge remains outside the drains and is discharged by opening the press.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: September 4, 2018
    Assignee: DEGREMONT
    Inventor: Jean-Michel Faccioli
  • Patent number: 10035116
    Abstract: A fluid mixing system that can be used as a bioreactor or fermentor can include a stand and a support housing pivotably mounted to the stand. The support housing bounds a chamber into which a container assembly is removably disposed. The container assembly includes a flexible bag bounding a compartment adapted to hold a fluid and a mixing element disposed within the compartment. The support housing can be tilted relative to the stand for ease in insertion of the container assembly. The support housing can also be repeatedly rocked relative to the stand form mixing fluid within the container assembly.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: July 31, 2018
    Assignee: Life Technologies Corporation
    Inventors: Nephi D. Jones, Brandon M. Knudsen, Whitt F. Woods
  • Patent number: 9969640
    Abstract: Provided is a sludge drying composite conditioner. The sludge drying composite conditioner comprises a Fenton's reagent or/and Fenton-like reagent and a matrix construct, the weight ratio between the Fenton's reagent or/and the Fenton-like reagent and the matrix construct is 1:0.05 to 300, and the matrix construct is powder. Further provided is an application method of the sludge drying composite conditioner, which comprises the steps of: adding a Fenton's reagent or/and Fenton-like reagent in a sludge, performing stirring and mixing, and performing an oxidation reaction; and adding a matrix construct to the sludge added with the Fenton's reagent or/and Fenton-like reagent and performing stirring and mixing.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 15, 2018
    Assignees: UNIVERSTAR SCIENCE & TECHNOLOGY (SHENZHEN) CO., LTD., HUAZHONG UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jiakuan Yang, Huan Liu, Shu He, Rong Wang, Changzhu Yang, Yafei Shi, Yalin Li, Wei Mao
  • Patent number: 9857310
    Abstract: A water testing system having a water sample container that is adapted to retain a water sample, a color indicator container that is adapted to dispense a color indicator which is adapted change the color of the water sample when the water sample contains DTC, and a colorimeter that is adapted to automatically determine a blank value and the concentration of sodium dimethyldithiocarbamate in the water sample. A method for determining the concentration of DTC in a water sample comprising providing a water testing system, placing the water sample in the water sample container, placing the water sample container in the colorimeter, automatically determining a blank value, adding the color indicator to the water sample, placing the water sample container in the colorimeter, and automatically determining the concentration of DTC in the water sample.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: January 2, 2018
    Inventor: Randy Fowler
  • Patent number: 9856159
    Abstract: Polymer flocculants are described comprising blends of high molecular weight polyethylene oxide and high molecular polyacrylamides. When introduced in desired amounts and with desired molecular weight ranges, excellent flocculation function is found that can be used to reduce polymer consumption to obtain a desired purity of clarified waste water. It has been found that the desirable polymer blends can be effectively added upstream from locations in which polyethylene oxide would generally be added so that the polymer blend can effectively mix with the slime flow to reduce or eliminate the need for excess polymer use to compensate for less effective mixing with the slime flow. Suitable waste treatment systems are described to provide for the delivery of the flocculants in the waste treatment process.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: January 2, 2018
    Assignee: PSMG, LLC
    Inventor: Jason Holt
  • Patent number: 9376358
    Abstract: Method and system for removal of heavy metal ions from a rich hydrate inhibitor stream, wherein the method comprises a) adding a selective heavy metal reactant to the rich hydrate inhibitor stream, forming a fluid stream comprising heavy metal salt particles, b) separating the obtained fluid stream in three streams a hydrocarbon stream, a recovered rich hydrate inhibitor stream, and a slurry comprising the heavy metal salt particles, c) separating remaining hydrate inhibitor from the slurry thereby obtaining a concentrated rest comprising the heavy metal salt particles.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: June 28, 2016
    Assignee: FJORDS PROCESSING AS
    Inventor: Kristian Jensen
  • Patent number: 9346693
    Abstract: Polymer flocculants are described comprising blends of high molecular weight polyethylene oxide and high molecular polyacrylamides. When introduced in desired amounts and with desired molecular weight ranges, excellent flocculation function is found that can be used to reduce polymer consumption to obtain a desired purity of clarified waste water. It has been found that the desirable polymer blends can be effectively added upstream from locations in which polyethylene oxide would generally be added so that the polymer blend can effectively mix with the slime flow to reduce or eliminate the need for excess polymer use to compensate for less effective mixing with the slime flow. Suitable waste treatment systems are described to provide for the delivery of the flocculants in the waste treatment process.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: May 24, 2016
    Assignee: PSMG, LLC
    Inventor: Jason Holt
  • Patent number: 9346692
    Abstract: The present invention is to a process for reducing and removing organic phosphorus acid from waste stream. The process involves adding a multivalent metal salt to the waste stream and adjusting the pH level of the waste stream to an optimum level to maximize the removal of organic phosphorus acid.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: May 24, 2016
    Assignee: CELANESE INTERNATIONAL CORPORATION
    Inventors: Michael Combs, Denis Fallon
  • Patent number: 9260322
    Abstract: When liquefying sludge, e.g as in U.S. Pat. No. 6,808,636, the combination of temperature, pH, and shearing, is synergistic. Described here is a system that provides for collating test sampling and full-scale data inputs, recording achieved results and the engineering parameters that achieved those particular results. The data is presented in e.g a table format, which assists design engineers to zero-in on the combinations of parameters that will likely give the desired results.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: February 16, 2016
    Assignee: LYSTEK INTERNATIONAL INC.
    Inventors: Owen Patrick Ward, Ajay Singh, Frederick Alan Mosher
  • Patent number: 9206492
    Abstract: A method for extracting precious metals from a polymetallic ore, comprising a) generating hypochlorites from a salt brine; b) chlorination of the ore using hypochlorites under acidic conditions; c) filtering to collect a pregnant solution and treating the pregnant solution for collection of precious metals; d) filtering to separate the precious metals and a barren brine; e) purifying the barren brine; and f) recycling halogens from the purified brine in the form of hypohalites formed by electrolysis of the purified brine, and comprising hypochlorite and hypobromite; step b) further comprising scrubbing excess halogens using calcium hydroxide; treating the pregnant solution in step c) comprises reducing an oxydo reduction potential of the pregnant solution and using calcium hydroxide for neutralization; and step e) comprising increasing the pH of the barren brine by addition of calcium hydroxide.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: December 8, 2015
    Assignee: Dundee Sustainable Technologies Inc.
    Inventors: Jean-Marc Lalancette, Bertrand Dubreuil, David Lemieux
  • Patent number: 9174860
    Abstract: The present invention relates to methods for the separation of materials from heterogeneous fluids and provides a means of effecting stimulant-sensitive flocculation and consolidation of solid suspensions within a liquid medium. Specifically, the present invention provides a method of controlling the state of a suspension of solid particles in a liquid, including applying to the suspension a stimulus adapted to control inter-particle forces between the solid particles. The stimulus is reversibly operable to control attraction and/or repulsion. Means of consolidating a sediment bed and of separating the resultant liquids-rich and solids-rich phases are also within the ambit of the invention.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 3, 2015
    Assignee: Newcastle Innovation Limited
    Inventors: George V. Franks, Graeme John Jameson, Yao-de Yan, Simon Richard Biggs
  • Publication number: 20150059102
    Abstract: In a process for separating a solid material from a suspension of the solid material in water, an organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure is added to the suspension of solid material in water and the suspension is drained. The organopolysiloxane polyalkylene oxide copolymer comprising a branched organopolysiloxane structure increases the rate of drainage of the suspension.
    Type: Application
    Filed: August 23, 2012
    Publication date: March 5, 2015
    Inventors: Tatsuo Souda, Jianren Zeng, Sung-Hsuen Chao, Serge Creutz, Alain Hilberer, Corina Pagnoni, Fabian Rouffiange, Haruhiko Furukawa
  • Publication number: 20150060368
    Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate and strontium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.
    Type: Application
    Filed: November 3, 2014
    Publication date: March 5, 2015
    Inventor: Timothy Edward KEISTER
  • Patent number: 8969426
    Abstract: The present invention relates to the recovery of nylon from co-mingled materials (e.g., carpet) with reduced or eliminated ash (e.g., calcium carbonate) contamination.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 3, 2015
    Assignee: Dynasep Inc.
    Inventors: Brian J. Waibel, David J. Lawrence
  • Patent number: 8945394
    Abstract: Disclosed herein are systems and methods for removing fine particulate matter from a fluid, comprising a separator that separates an inflow fluid stream into an overflow fluid path and an underflow fluid path, where the underflow fluid path is treated with a tethering material that attaches to the coarse particulate matter to form tether-bearing anchor particles and where the overflow fluid path is treated with an activating material so that the activating material interacts with the fine particulate matter to form activated particles. After these treatments, the underflow fluid path containing the tether-bearing anchor particles is commingled with the overflow fluid path containing the activated particles, so that a removable complex is produced that can be removed in a settling facility, thereby removing the fine particulate matter from the fluid.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: February 3, 2015
    Assignee: Soane Energy, LLC
    Inventors: Patrick D. Kincaid, Robert P. Mahoney, David Soane
  • Publication number: 20150027957
    Abstract: Methods of producing collection tubes are presented. The methods include providing a separator substance that can rapidly polymerize in a short time to a desired hardness and disposing the separator substance within the lumen of the tube. The separator substance is formulated to have a density between an average density of a serum fraction of whole blood and a cell-containing fraction of whole blood, and to be flowable with whole blood. Upon centrifugation of a tube having blood, the separator substance forms a barrier between the whole blood fractions. The tube and barrier maintain stability of one or more analyte levels, including potassium and glucose, within 10% of their initial values before centrifugation for at least four days.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Inventor: Jane F. Emerson
  • Publication number: 20150021273
    Abstract: An oil recovery process that utilizes one or more filtration medium comprises a filter cake and a second filtration medium being nonwovens sheet to remove silica and/or oil and/or dissolved organics and/or dissolved solids from produced water which includes separating oil from the produced water and precipitating silica into particles and wherein the produced water having the precipitated silica is directed to a filtration medium which operates in a direct flow filtration mode and removes the precipitated silica from the produced water to form a filtrate stream.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Inventors: SIMON FRISK, Hyun Sung Lim, Lisa C. Bates, Peter Andrin, Basil El-Borno
  • Patent number: 8894864
    Abstract: Disclosed herein is a controlled method of minimizing radioactive sludge generation in treatment of wastewater from an oil and/or gas well. The method comprises measuring a concentration of a radioactive material in wastewater to be treated and measuring a concentration of barium in the wastewater to be treated. The method further comprises adding a calculated quantity of sulfate to the wastewater to be treated sufficient to precipitate a quantity of barium sufficient to reduce the concentration of the radioactive material to a level such that sludge precipitated in a secondary precipitation has a radiation level below a defined radiation level.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: November 25, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventors: Stanley R. Karrs, Richard A. Altman
  • Publication number: 20140326674
    Abstract: Disclosed are zero liquid discharge (ZLD) processes that utilize naturally occurring or supplemental silicate in the water supply for removing magnesium and calcium hardness from aqueous alkaline streams in the form of a silica gel, thereby allowing separation of a low hardness supernant for recycling.
    Type: Application
    Filed: January 14, 2014
    Publication date: November 6, 2014
    Inventor: John Richardson
  • Patent number: 8877690
    Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: November 4, 2014
    Assignee: ProChemTech International, Inc.
    Inventor: Timothy Edward Keister
  • Patent number: 8877066
    Abstract: A method for monitoring and controlling the chemistry of a Zero Liquid Discharge (ZLD) process in power plants is described. The method identifies the principal phenomena of precipitation of calcium sulphate and calcium carbonate which can occur in such system and the principal critical sections affected by such precipitation phenomena. The interventions aimed at keeping or restoring the sustainable chemical conditions with respect to the precipitation of calcium sulphate and calcium carbonate in all the critical sections of the ZLD system are then indicated, ensuring saturation ratios of calcium sulphate and calcium carbonate lower than or equal to 1 through time.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: November 4, 2014
    Assignee: Enel Produzione S.p.A.
    Inventors: Vincenzo Cenci, Claudio Mosti
  • Publication number: 20140319066
    Abstract: Systems and methods for improving the quality of solids and liquids recovered at atmospheric pressure and temperature from a stillage stream generated as a by-product of an ethanol production process, the recovered solids having higher bio-available amino and fatty acids than evaporation-produced condensed solubles, the recovered liquids having less total solids and total suspended solids than evaporation-produced condensate. A static mixer includes an input for receiving the stillage stream combined with a GRAS anionic polymer, a cylindrical mixing chamber that controllably mixes the stillage stream and the polymer to generate wet flocculated solids and liquid co-product, and a discharge chute that outputs the wet flocculated solids and liquid co-products onto a moving, gravity filter belt having a membrane surface that separates the output from the static mixer into recovered liquids in the form of clarified, thin stillage and recovered solids in the form of dry flocculated solids.
    Type: Application
    Filed: March 23, 2014
    Publication date: October 30, 2014
    Applicant: Yield and Capacity Group, LLC
    Inventors: Michael B. LoCascio, Ronald K. Dunbar
  • Publication number: 20140311989
    Abstract: The invention relates to a method for solidifying a floating fat and oil in a food waste water, the method being capable of solidifying floating oil by uniformly mixing and aging the floating oil having a high content of water generated during the process of treating high concentration waste water generated during a food waste treatment process or generated from a food company, slaughterhouse and the like
    Type: Application
    Filed: November 15, 2012
    Publication date: October 23, 2014
    Applicants: SUDOKWON LANDFILL SITE MANAGEMENT CORPORATION
    Inventors: Hee Dong Bae, Young Rog Kim, Seok Jun Park, Jun Ho Cho, Jin Hyung Lee
  • Publication number: 20140263058
    Abstract: A method and system for treating waste water from hydraulic fracturing is disclosed. The treatment includes removing the sand, suspending the inorganic metals and impurities, using flocculation to engulf the impurities, and separating the impurities from the water, resulting in pure water that can be reused in the process.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Inventor: Richard H. Fagher
  • Patent number: 8828192
    Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In an embodiment of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product, and an electric motor with motor rotor and magnets hermetically sealed within the fluid pressure boundary of the distillation system.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: September 9, 2014
    Assignee: DEKA Products Limited Partnership
    Inventors: Jason A. Demers, Scott A. Leonard, Kingston Owens
  • Patent number: 8828242
    Abstract: A system for dewatering a stream of slurry has a first and a second separator. The first separator removes objects above a first size, to produce a stream of primary treated slurry. The second separator removes objects above a second size from the primary treated stream, the second size being smaller than the first size. Optionally, a third separator removes objects above a yet smaller third size from the stream of secondary treated slurry. The first separator has a plurality of sieve mat supports alternately connected to a main support frame section and a movable support frame section so that the flexible sieve mat can be agitated by the movable support frame section, a collector being provided for collecting the primary treated slurry passing through the flexible sieve mat. In an optional step, water contained in the separated solids is removed.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: September 9, 2014
    Assignee: Genesis Fluid Solutions, Ltd
    Inventors: Michael K. Hodges, Larry D. Campbell
  • Patent number: 8828230
    Abstract: A method of conditioning, separating, drying, and comminuting sulfurous acid treated wastewater suspended solids for addition to aerobic and anaerobic digesters to provide electron donor carbon and sulfur compounds to increase the removal rate of ammonia, nitrates/nitrites, and BOD compounds.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 9, 2014
    Assignee: Earth Renaissance Technologies, LLC
    Inventor: Marcus G. Theodore
  • Publication number: 20140231359
    Abstract: A method for treating phosphate-containing wastewater, such as phosphogypsum pond water. The method includes the steps of: (a) adding a first cation to the wastewater to precipitate fluorosilicate from the wastewater; (b) adding a second cation to the wastewater to precipitate fluoride from the wastewater; (c) raising the pH of the wastewater to precipitate the second cation from the wastewater; (d) removing residual silica from the wastewater; and (e) precipitating phosphate from the wastewater. The precipitated fluorosilicate may be sodium fluorosilicate. The precipitated phosphate may be struvite.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 21, 2014
    Inventors: Pierre Cote, Ahren Britton, Ram Prasad Melahalli Sathyanarayana, Rhonda Maria Hyslop, Donald Robert Clark
  • Patent number: 8808547
    Abstract: A process removes boron from ion exchange system regeneration solution including introducing a borate precipitator into the regeneration solution in a precipitation zone to generate borate precipitate; introducing a coagulator into the regeneration solution that coagulates solids and/or borate precipitate generated by the borate precipitator and absorbs boron into the solids; introducing the regeneration solution, solids and borate precipitate into a separation zone; introducing anionic polymer into the regeneration solution adjacent to or in the separation zone to increase the propensity of borate precipitate and solids to separate from the regeneration solution; and filtering the regeneration solution to remove residual suspended solids from the regeneration solution.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: August 19, 2014
    Assignee: Infilco Degremont, Inc.
    Inventor: Michael L. Pudvay
  • Patent number: 8801937
    Abstract: A process for treatment of water containing an azole-type anticorrosive for copper, includes adding ferrous ions to the water containing the azole-type anticorrosive for copper and having a pH of 4-8, thereby precipitating an insoluble iron-azole complex, and separating the insoluble iron-azole complex. An amount of the ferrous ions added is 0.5 to 5.0 times, by molar ratio, an amount of the azole-type anticorrosive for copper in the water containing the azole-type anticorrosive for copper. After the insoluble iron-azole complex is separated, remaining total organic carbon (TOC) components are subjected to an ozone treatment.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: August 12, 2014
    Assignee: Kurita Water Industries Ltd.
    Inventors: Tomoharu Yasuike, Atsushi Nemoto
  • Patent number: 8790516
    Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 29, 2014
    Assignee: Outotec Oyj
    Inventors: Mikko Ruonala, Jaakko Leppinen, Ville Miettinen
  • Publication number: 20140197111
    Abstract: Wastewater treatment methods and systems for removal of phosphorus (P) and nitrogen (N) from wastewater and for recovery of them as usable materials. Sufficient amount of dolomite lime and slaked dolomite lime is added into the wastewater to increase the pH of the wastewater to above 8.5 and to form P precipitates and to convert ammonium to ammonia in a precipitation-ammonia stripping reactor or a continuous flow precipitation reactor. The P precipitates are separated from the wastewater and recovered as usable solid material. The ammonia gas is absorbed and concentrated with acid solution in an ammonia absorption tower as usable liquid material.
    Type: Application
    Filed: December 19, 2013
    Publication date: July 17, 2014
    Applicant: Chinese Research Academy of Environmental Sciences
    Inventors: Wei MENG, Yonghui SONG
  • Publication number: 20140197110
    Abstract: The invention relates to a method for recycling of phosphoric acid solution from a decontamination bath, which solution is contaminated with radioactive components, wherein the used phosphoric acid solution is diluted with aqueous oxalic acid solution, in order to separate off iron oxalate in this connection, and the phosphoric acid solution is used for decontamination of further system parts, wherein the iron ion content in the phosphoric acid in the decontamination bath is continuously measured, and phosphoric acid is continuously withdrawn from the decontamination bath and concentrated and purified phosphoric acid is replaced, so that a specific concentration of dissolved iron in the contamination bath is not exceeded, and to a system for implementation of the method.
    Type: Application
    Filed: June 23, 2011
    Publication date: July 17, 2014
    Applicant: BABCOCK NOELL GMBH
    Inventor: Gerd Edler
  • Patent number: 8771477
    Abstract: Embodiments of the invention provide systems and methods for water purification and desalination. The systems have a preheater, a degasser, multiple evaporation chambers with demisters, heat pipes, and a control system, wherein the control system permits continuous operation of the purification and desalination system without requiring user intervention or cleaning. The systems are capable of recovering hear from each distillation stage, while removing, from a contaminated water sample, a plurality of contaminants including: microbiological contaminants, radiological contaminants, metals, salts, and organics.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: July 8, 2014
    Assignee: Sylvan Source, Inc.
    Inventor: Eugene Thiers
  • Publication number: 20140158632
    Abstract: Described herein are methods of separating a first soluble salt from water that contains the first soluble salt and a second soluble salt, by (a) adding a composition to a water product containing a first soluble salt and a second soluble salt, the composition comprising seed crystals composed substantially of a target insoluble salt to be formed from the first soluble salt; and (b) collecting the target insoluble salt. These methods may be used, for example, to separate strontium from water that includes at least one soluble strontium salt and a second soluble salt (such as one soluble calcium salt).
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Applicant: ADVANCED WATER RECOVERY, LLC
    Inventors: Rakesh Govind, Robert Foster
  • Publication number: 20140151296
    Abstract: Systems and methods for removing organic contaminants from water may be used, for example, to treat produced water from a steam assisted heavy oil recovery operation. The treated produced water may be re-used to create steam. Alternatively, the produced water may be a blowdown stream treated to facilitate further treatment in a thermal crystallizer. The treatments may include pH adjustment or separating de-solubilized organics or both. Other treatments may include one or more of oxidation, sorption and biological treatments. The treatments may be used alone or in various combinations. One exemplary combination includes reducing the pH of produced water, separating de-solubilized organics from the produced water, and oxidizing the produced water or contacting the produced water with activated carbon.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 5, 2014
    Applicant: General Electric Company
    Inventors: Brian Christopher MOORE, Hope MATIS, William Leonard KOSTEDT, IV, David M. POLIZZOTTI, Matthew Alan PETERSEN, Jeffrey Lynn SCHWORM, Anthony Yu-Chung KU
  • Publication number: 20140116956
    Abstract: A process is provided for dewatering fluid fine tailings, comprising combining fluid fine tailings with fresh oil sands tailings to create a tailings mixture having a sand to fines ratio of about 1.0 to about 2.0; optionally diluting the tailings mixture with water to an optimal density; adding an aqueous polymeric flocculant to the tailings mixture and mixing the polymeric flocculant and tailings mixture to form a flocculated material; and transferring the flocculated material to a deposition cell for dewatering.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: SYNCRUDE CANADA LTD. in trust for the owners of the Syncrude Project Fort McMurray
    Inventors: SIMON YUAN, RON SIMAN
  • Publication number: 20140116955
    Abstract: A process for the disposal of oil sands tailings is provided, comprising: optionally diluting the tailings with sufficient water to yield a tailings feed having a solids content in the range of about 18 wt % to about 36 wt %; adding one or both of a coagulant and a flocculant to the tailings feed to form a centrifuge feed; centrifuging the centrifuge feed to produce a centrifuge cake having a solids content of at least about 50% and a centrate having a solids content of less than about 3 wt %; and introducing the centrifuge cake into an overburden containment structure comprised of oil sand overburden, said overburden containment structure comprising a least one trench for holding the centrifuge cake, or into a deep disposal site for additional dewatering of the centrifuge cake through self-weight consolidation and creep.
    Type: Application
    Filed: August 29, 2013
    Publication date: May 1, 2014
    Applicant: SYNCRUDE CANADA, LTD. in trust for the owners of the Syncrude Project as such owners exist now and
    Inventors: JAMES LORENTZ, RICK LAHAIE, RANDY MIKULA, ROBERT DONAHUE, TERRI-LYNN REEB, ROBERT CAMERON, DANIEL WAYNE MIMURA
  • Patent number: 8678200
    Abstract: A system for dewatering a stream of slurry has a first and a second separator. The first separator removes objects above a first size, to produce a stream of primary treated slurry. The second separator removes objects above a second size from the primary treated stream, the second size being smaller than the first size. Optionally, a third separator removes objects above a yet smaller third size from the stream of secondary treated slurry. The first separator has a plurality of sieve mat supports alternately connected to a main support frame section and a movable support frame section so that the flexible sieve mat can be agitated by the movable support frame section, a collector being provided for collecting the primary treated slurry passing through the flexible sieve mat. In an optional step, water contained in the separated solids is removed.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: March 25, 2014
    Assignee: Genesis Fluid Solutions, Ltd
    Inventors: Michael Kent Hodges, Larry D. Campbell
  • Publication number: 20140069867
    Abstract: Systems and methods for remediating an initially liquid-like slurry pond include distributing one or more floating wicks into the slurry pond, wherein the slurry pond includes a slurry with a supernatant level above the slurry. A method also includes placing a load on the slurry, wherein the load causes an effective stress on the slurry and aids in dewatering the slurry.
    Type: Application
    Filed: December 19, 2012
    Publication date: March 13, 2014
    Inventors: David C. Rennard, Thomas R. Palmer, Scott R. Clingman, Robert D. Kaminsky
  • Publication number: 20140054232
    Abstract: A dewatering process comprises dispersing an anionic polymer flocculant in a slurry comprising water and oil sands fine tailings to form flocs comprising fines bridged by the anionic polymer flocculant. A cationic polymer flocculant is subsequently dispersed in the flocculated slurry to further flocculate the flocs and form floc aggregates. The floc aggregates comprise flocs bridged by the cationic polymer flocculant. The floc aggregates are then compressed to remove water and form a dewatered compact. A system is also provided for the dewatering processes using inline mixtures and a filter press.
    Type: Application
    Filed: March 13, 2013
    Publication date: February 27, 2014
    Applicant: ECOLAB USA INC.
    Inventors: William T. DUTTLINGER, JR., Anoop Chengara, Kimberly Jantunen Cross, Anthony G. Sommese
  • Publication number: 20140054231
    Abstract: A process for dewatering oil sands tailings is provided, comprising providing a tailings feed having a solids content in the range of about 10 wt % to about 45 wt %; adding a flocculant to the tailings feed and mixing the tailings feed and flocculant to form flocs; and centrifuging the flocculated tailings feed to produce a centrate having a solids content of less than about 3 wt % and a cake having a solids content of at least about 50 wt %.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Applicant: SYNCRUDE CANADA LTD. in trust for the owners of Syncrude Project
    Inventors: JONATHAN SPENCE, BARRY BARA, JIM LORENTZ, RANDY MIKULA, JIWON LEE, RICHARD DANIEL LAHAIE
  • Patent number: 8641907
    Abstract: A method of recovering polyhydroxyalkanoates (PHAs) from municipal waste sludge includes: (a) removing coarse particles in the municipal waste sludge and measuring a solid content in the municipal waste sludge in terms of a volatile suspended solid in the municipal waste sludge; (b) removing a supernatant from the municipal waste sludge; (c) freezing the municipal waste sludge; (d) adding a controlled amount of sodium hypochlorite solution to the municipal waste sludge that has been frozen, a ratio of the solid content of the municipal waste sludge to a volume of the sodium hypochlorite solution added in step (d) ranging from 0.67 mg/ml to 4 mg/ml and being defined as a liquid-solid ratio; and (e) separating PHAs from non-PHAs substances in the municipal waste sludge obtained in the step (d).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 4, 2014
    Assignee: National Chi Nan University
    Inventors: Yung-Pin Tsai, Meng-Shan Lu, Chih-Chi Yang, Shou-Te Chen
  • Patent number: 8641908
    Abstract: A method of recovering polyhydroxyalkanoates (PHAs) from municipal waste sludge includes: (a) measuring a solid content in the municipal waste sludge in terms of a volatile suspended solid in the municipal waste sludge; (b) removing supernatant from the municipal waste sludge; (c) freezing the municipal waste sludge; (d) conducting a pretreatment of the municipal waste sludge that has been frozen; (e) adding a surfactant into the pretreated sludge to obtain a slurry; (f) adding a controlled amount of sodium hypochlorite solution to the municipal waste sludge obtained in step (e), a ratio of a volume of the sodium hypochlorite solution to the solid content of the municipal waste sludge ranging from 0.67 mg/ml to 1.25 mg/ml and being defined as a liquid-solid ratio; and (g) separating PHAs from non-PHAs substances in the municipal waste sludge obtained in the step (f).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 4, 2014
    Assignee: National Chi Nan University
    Inventors: Yung-Pin Tsai, Meng-Shan Lu, Chih-Chi Yang, Shou-Te Chen
  • Publication number: 20130334143
    Abstract: The present disclosure provides apparatus and method for phosphorous removal using dolomite by mixing an inorganic coagulant and dolomite together to improve the phosphorous removal efficiency and controlling pH, which has been lowered due to the use of the inorganic coagulant, close to the neutral by means of dolomite to improve the economic feasibility and minimize an additional neutralizing process.
    Type: Application
    Filed: August 23, 2012
    Publication date: December 19, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyung Guen SONG, Byung Ha LEE, Ho Young CHA